Security Benefits of FIDO Flashcards

How does FIDO authentication enhance security?

Answer: It eliminates password-based vulnerabilities

FIDO authentication significantly enhances security by eliminating password-based vulnerabilities such as phishing, credential stuffing, and server-side breaches that expose passwords. By using strong public-key cryptography and on-device private keys, FIDO ensures that no password or secret is ever transmitted or stored on the server. This makes accounts much harder to compromise, as there's no central honeypot of credentials for attackers to target.

Which attack is FIDO authentication designed to prevent?

Answer: Phishing attacks

FIDO authentication is specifically designed to be highly resistant to phishing attacks. Because the authentication process involves cryptographic challenges tied to the specific origin (website) and relies on a private key securely stored on the user's device, even if a user is tricked into visiting a fake website, their FIDO authenticator will refuse to authenticate. This prevents credential compromise, as the private key will only sign challenges from legitimate sites.

Why is biometric authentication in FIDO more secure than passwords?

Answer: It is stored securely on the device

In FIDO, biometric data (like fingerprints or facial scans) is used to unlock the private key stored securely on the user's device, not as the authentication credential itself. This biometric data never leaves the device and is never transmitted to a server, making it far more secure than passwords which are often stored on servers and susceptible to breaches. The biometric acts as a local unlock mechanism for the cryptographic key.

What is a key advantage of hardware security keys in FIDO authentication?

Answer: They require physical possession for authentication

A key advantage of hardware security keys in FIDO authentication is that they require physical possession by the legitimate user. This 'something you have' factor, combined with a 'something you know' (PIN) or 'something you are' (biometric) to unlock the key, makes them extremely resistant to remote attacks like phishing and malware. The physical presence requirement significantly raises the bar for attackers.

Which FIDO feature reduces the risk of credential breaches?

Answer: Decentralized credential storage

FIDO's decentralized credential storage significantly reduces the risk of large-scale credential breaches. Instead of storing user passwords or secrets on a central server, FIDO stores unique cryptographic private keys securely on each user's device. This means a breach of a service provider's server will not expose user credentials, as there are no secrets for attackers to steal, thus limiting the impact of data breaches.

Why is FIDO authentication considered user-friendly?

Answer: It eliminates password fatigue

FIDO authentication is considered user-friendly because it eliminates password fatigue, which stems from the need to remember complex passwords, change them frequently, and manage multiple credentials. By enabling passwordless logins using familiar gestures like biometrics or PINs, FIDO offers a much simpler, faster, and more intuitive user experience. This convenience encourages stronger security adoption.